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Grafting method for populus diversifolia vegetative propagation

A technology of asexual reproduction and Populus euphratica, applied in the application, cultivation, agriculture and other directions, can solve the problems of poor repeatability, hindered yellowing, difficult to solve problems such as asexual reproduction of Populus euphratica, and achieves obvious superiority.

Inactive Publication Date: 2015-09-09
INST OF AFFORESTATION & DESERTIFICATION PREVENTION & CONTROL XINJIANG ACADEMY OF FOREST SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, judging from the research status of Populus euphratica vegetative propagation, the rooting and seedling rate of hard branch cuttings is only 13-26%; although some tender branch cutting experiments can obtain rooting rates as high as 70-80%, they are all small-scale experiments. research, and poor reproducibility
In recent years, there have been many reports on tissue culture and propagation of Populus euphratica, but they were all hindered by the problem of yellowing, and no substantial progress has been made.
The research on Populus euphratica grafting technology is mainly focused on grafting Populus euphratica on Xiaomeihan, Populus xinjiang, Populus Erbai, willow, Populus tomentosa as rootstocks, or populus euphratica as rootstocks, and the survival rate of grafting has been successful. Unfortunately, Grafted seedlings fail to show the excellent characteristics of Populus euphratica, and it is still difficult to solve the problem of asexual reproduction of Populus euphratica

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0019] A grafting method for Populus euphratica asexual reproduction, specifically accomplished by the following methods:

[0020] 1) Select the best tree for picking branches

[0021] According to the main afforestation broad-leaved tree species breeding procedures and requirements (GB / T14037-1993), forestry breeding and seed management technical standards (GB / T 16620-1996) to select excellent individual plants, will select excellent individual plants as branches Yuki. The stand selection criteria are more than 15 years old, relatively concentrated and contiguous, with straight and round trunks, small branches, and healthy stands; the selection standard for excellent single trees is based on the selection of high-quality stands, according to the age and height of the trees. , diameter at breast height, straightness, health status and other indicators, select plants with high branch height, straight trunk, and good dry wood as excellent trees. The selection criteria for pick...

Embodiment 2

[0036] The influence of embodiment 2 grafting time, method on grafting survival rate

[0037] The test results show that as shown in Table 1, the survival rate difference between the two grafting methods of bud grafting and graft grafting is extremely significant (p<0.01), wherein the survival rate of bud grafting is as high as 96.0%, but that of graft grafting is 63.3%. Grafting time has a significant effect on the survival rate of grafting (p<0.01). The survival rate is the highest in late May, followed by mid-June. Grafting in July and August can reach a certain survival rate, but the preservation rate is low. If you water within 3 days before and after grafting, the survival rate of grafting will be greatly reduced. The reason is not only because of the water ingress at the interface (of course, the damage of the water ingress at the interface is more direct), but also because the rootstock root pressure increases due to the large soil moisture. Aggravated by the interface...

Embodiment 3

[0042] The impact of embodiment 3 rootstock growth vigor on grafting survival rate

[0043] The size, thickness and age of the rootstock are closely related to the survival of grafting and the growth of seedlings after grafting. As can be seen from Table 2, overgrowth of rootstocks will greatly reduce the survival rate of bud grafting, and the survival rate of bud grafting of 2-year-old Populus euphratica seedlings is significantly higher than that of 3-year-old Populus euphratica seedlings (p<0.05)), while the budding survival rate of Populus euphratica seedlings with a ground diameter of 0.7-1.2 cm The rate is significantly higher than other ground diameters. The test results showed that the rootstocks of Populus euphratica with 2 years old and 0.7-1.2cm ground diameter had the highest budding survival rate. Therefore, the cultivation of Populus euphratica rootstock should be considered from the aspects of selection of seedling age, growth, and ground diameter, and especial...

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Abstract

The invention discloses a grafting method for populus diversifolia vegetative propagation. The method comprises: selecting excellent superior trees to get twigs, and expanding propagation the acquired twigs on a seedbed, acquiring young stem tips, and selecting a populus diversifolia stock to perform plate budding in later May to the beginning of June. The method can ensure grafting survival rate of the populus diversifolia reach up to 96.0%, and compared with survival rate of 63.3% of peg graft, the method has obvious superiority. The method has enlightening significance for a populus diversifolia vegetative propagation problem, and provides technical support for development of sexless populus diversifolia.

Description

technical field [0001] The invention belongs to the technical field of plant vegetative propagation, and relates to a vegetation restoration and reconstruction technology of the degraded Populus euphratica forest ecosystem in arid areas, in particular to a grafting method for the vegetative propagation of Populus euphratica. Background technique [0002] Populus euphratica Oliver (Populus euphratica Oliver) has the characteristics of xerophytic plants and salt-tolerant plants. It has strong adaptability, well-developed horizontal and vertical root systems, and has the characteristics of salt-alkali, water-humidity resistance, and the ability to resist drought and sandstorms. It grows normally and is arbor tree species naturally distributed on both sides of the inland river in the arid desert area. It plays an important role in providing materials and so on. At the same time, its potential genetic resource value and forest industry value have also attracted much attention. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00
CPCA01G17/005
Inventor 刘茂秀史军辉王新英任伟
Owner INST OF AFFORESTATION & DESERTIFICATION PREVENTION & CONTROL XINJIANG ACADEMY OF FOREST SCI
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